Means for preventing lodgment and matting of fibrous material on conveyers.



H. HARRISON.

MEANS FOR PREVENTING LODGMENT AND MATTING 0F FIBROUS MATERIAL 0N CONVEY ERS. APPLICATION FILED NOV. 8. I9l6.

1,235,027. Patented July 31, 1917;

BARRY HARRISON, 0F LOWELL, MASSACHUSETTS, ASSIGNOR TO C.

e. sAnqENTs soNs CORPORATION, OF GRANITEVILLE, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

MEANS FOR PREVENTING LODGMENT AND MATTING or FIBEoUs MATERIAL 0N CONVEYERS.

Specification of Letters Patent.

. Patented July 31, 1917.

Application filed November 8, 1916. Serial No. 130,253.

To all whom it may concern:

Be it known that I, HARRY HARRISON, a citizen of the United States, residing at Lowell, in the county of Middlesex and State of Massachusetts, have invented a new and useful Means for Preventing Lodgment and Matting of Fibrous Material on Con veyers, of which the following is a specification.

This invention, although capable of general use, is particularly adapted for the cleaning of wire cloth and simllar conveyers I from fibers and foi" carrylng' wool and other fibrous materials.

The principal object of the invention is to provide for freeing from fibers and-foreign matter the openings in the wire cloth or other porous material of which theconveyer is made by preventing the initial lodgment and matting of the lint and the like in the carrying surface. In this, way a free passage for air is provided through the conveyer so as to increase the eflic'iency for drying purposes. Further objects and advan tages of the invention will appear hereinafter.

Reference isto be had to the ing drawings, in which c Figure 1 is an elevation of one form of wool drier with the front side removed. showing the conveyer and a preferred means for cleaning the same, and

Fig. 2 is a sectional View on-the line 22 of Fig. ,1.

accompanywell-known type 0f wool drier in which the wool is fed down the chute 10 on a flat wire cloth endless apron or conveyer llcarried by drums I2 and iscontinuously fed out on a plate 13 from which it drops. Blowers 14 are shown for blowing thewarm dryair throughthe conveyer to expedite the drying operation.

This invention interstices of the apron or conveyer free foreign materials so as to afford at all times a free foirculationfof air through the conveyer. This is particularly important in an endless conveyer because there aretwo strands, the lower one of them coming between the blowers and upper ,strand which supports the material to "be dried. It is well-known that conveyers,

The invention is shown as applied to the assisting the drying operation'in the caseprovides 7 for keeping the? with 'lintand other fibrous materials so as to form a mat. This afi'ords, in the form shown in the drawings, two flat partitions for interfering with the flow of the hot air through the wool or other material to be dried. Each one of these partitions tends to deflect the hot air around the sides and ends of the conveyer, and thus materially reduces the efiiciency not only on account of passing the hot air out of contact with the wool, but also by tending to obstruct the current of the air and make it harder to force it through the machine.

According to the present invention, this objection is done away with in an extremely simple manner. Two pipes 15 are shown for introducing steam or air under pressure especially in the form of wire cloth, fill up between the strands of the conveyer. These strand. The air or steam therefor is forced against the inner side of the conveyer outwardly so as to force the lint back the way in which it came and thus easily dislodge it from the conveyer. It is to be'noted that the jets extend practically across the con-- veyer at both points and thusclean it all the way across.

It will be understood, of course, that the upper one blows the lint up into the wool that is being carried ofl so that it has a tendency to be removed from the drier with the product thereof. and cannot become lodged initially.

t will be understood also that if desired air under pressure'can be heated, thus of the upper series of jets. This method can, be used whenever necessary, or if de- I sired it can be used continuousl ing the conveyer free from lint and not at any time allowingit to collect. I prefer to carry the invention out in the latter way and when that is done only a low pressure need be used.

Although I have illustrated and described only a single embodiment of the invention and shownit as applied only to. a single type of conveyer,

, thus keep- .yet I am aware of the fact that the invention can be carried out in other having a substantially flat conveying surface Ways and that it can be applied to a large with two transverse ipes located between number of types of conveyers both 'reciprothe strands thereof and in parallel pilanes,one cating and endless without departing from near the operating strand and the other near 15 the scope of the invention as expressed in the the idle strand, each of said pipes having claim. Therefore I do not wish to be limjet openings directed toward the adjacent ited to all the details of construction herein strand of the conveyer for blowing air or shown and described, but what I do claim steam against the same. is In testimony whereof I have hereunto 20 In a machine of the class described, the affixed my signature. I combination of an endless screen conveyer HARRY HARRISON. 

